Average rating
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Authors
Reichardt, W.Issue Date
1981-03Submitted date
2023-03-29
Metadata
Show full item recordAbstract
Cytophaga-like bacteria are at least temporarily abundant in almost all aquatic habitats, although the techniques which are currently available for large scale identification and enumeration, may only lead to rather vague taxonomic conclusions. As for obtaining maximal plate counts, the enumeration of relatively fastidious and mostly organic nitrogen-requiring marine forms could be considerably improved by using 38 mg/l of polymyxin B as a counterselective agent. From a collection of chitin-degrading and predominantly estuarine bacteria, Cytophagaceae= strains were selected to study utilization of glucose ‚production of depolymerizing enzymes and survival under hydrostatic pressure. While swarming (spreading) as one of the most striking colony features was insufficient as taxonomic indicator, Cytophaga-like isolates could be classified on the basis of their substrate requirements for swarming. Different swarming types could at least partly be ranked according to their kinetic parametere for glucose utilization. While being able to degrade various biopolymers effectively even at low water temperatures, psychrotrophic, oligonitrophilic isolates suggest a key position for this type of freshwater cytophagas in major biogeochemical pathways of the carbon cycle. Growth rates,production of chitin-degrading enzymes as well as autolytic activities of one of these isolates (Cytophaga johnsonae, strain C 21) were characterized by similar temperature responses. In contrast to deep freshwater habitats, nothing is known about a corresponding contribution of marine Cytophaga spp. to biodegradation processes in the deep sea. It could be shown,however, that even a starved culture of an estuarine surface water isolate was able to survive hydrostatic pressures up to 500 at .Citation
The Flavobacterium-Cytophaga Group, 189Affiliation
Department of Microbiology Oregon State University Corvallis, Oregon 97331, USAType
Book chapterconference paper
Language
enSeries/Report no.
GBF Monograph Series, No. 5Collections
The following license files are associated with this item:
- Creative Commons
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International